Higher education includes teaching, research, exacting applied work (e.g. in medical schools and dental schools), and social services activities of universities. Within the realm of teaching, it includes both the undergraduate level, and beyond that, graduate-level (or postgraduate level). The latter level of education is often referred to as graduate school, especially in North America.

Since World War II, developed and many developing countries have increased the participation of the age group who mostly studies higher education from the elite rate, of up to 15 per cent, to the mass rate of 16 to 50 per cent.[7][8][9] In many developed countries, participation in higher education has continued to increase towards universal or, what Trow later called, open access, where over half of the relevant age group participate in higher education.[10] Higher education is important to national economies, both as an industry, in its own right, and as a source of trained and educated personnel for the rest of the economy. College educated workers have commanded a measurable wage premium and are much less likely to become unemployed than less educated workers.[11][12]

Such institutions may also offer non-degree certificates, which indicate completion of a set of courses comprising a body of knowledge on a particular topic, but the granting of such certificates is not the primary purpose of the institutions. Tertiary education is not a term used in reference to post-secondary institutions in the United States or Canada.[citation needed]

Demonstrated ability in reading, mathematics, and writing, as typically measured in the United States by the SAT or similar tests such as the ACT, have often replaced colleges' individual entrance exams, and is often required for admission to higher education.[13] There is some question as to whether advanced mathematical skills or talent are in fact necessary for fields such as history, English, philosophy, or art.[14]

In addition, professional-level education is always included within Higher Education, and usually in graduate schools, since many postgraduateacademic disciplines are both vocationally, professionally, and theoretically/research oriented, such as in the law, medicine, pharmacy, dentistry, and veterinary medicine. A basic requirement for entry into these graduate-level programs is almost always a bachelor's degree, although alternative means of obtaining entry into such programmes may be available at some universities. Requirements for admission to such high-level graduate programs is extremely competitive, and admitted students are expected to perform well.

Mean financial wealth of U.S. families by education of the head of household, 1989-2010

Mean income of U.S. families by education of the head of household, 1989-2010

In the United States, there are large differences in wages and employment associated with different degrees. Medical doctors and lawyers are generally the highest paid workers, and have among the lowest unemployment rates. Among undergraduate fields of study, science, technology, engineering, math, and business generally offer the highest wages and best chances of employment, while education, communication, and liberal arts degrees generally offer lower wages and a lower likelihood of employment.[11][15][16][17]

Teaching engineering is teaching the application of scientific, economic, social, and practical knowledge in order to design, build, maintain, and improve structures, machines, devices, systems, materials and processes. It may encompass using insights to conceive, model and scale an appropriate solution to a problem or objective. The discipline of engineering is extremely broad, and encompasses a range of more specialized fields of engineering, each with a more specific emphasis on particular areas of technology and types of application. Engineering disciplines include: aerospace, biological, civil, chemical, computer, electrical, industrial, and mechanical.

The performing arts differ from the plastic arts or visual arts, insofar as the former uses the artist's own body, face and presence as a medium; the latter uses materials such as clay, metal or paint, which can be molded or transformed to create a work of art.

Higher vocational education and training takes place at the non-university tertiary level. Such education combines teaching of both practical skills and theoretical expertise. Higher education differs from other forms of post-secondary education such as that offered by institutions of vocational education, which are more colloquially known as trade schools. Higher vocational education might be contrasted with education in a usually broader scientific field, which might concentrate on theory and abstract conceptual knowledge.

This describes a distinct form of Higher Education that offers a particularly intense integration with the world of work in all its aspects (including teaching, learning, research and governance) and at all levels of the overarching Qualifications Framework of the European Higher Education Area. Its function is to diversify learning opportunities, enhance employability, offer qualifications and stimulate innovation, for the benefit of learners and society.

The intensity of integration with the world of work (which includes enterprise, civil society and the public sector) is manifested by a strong focus on application of learning. This approach involves combining phases of work and study, a concern for employability, cooperation with employers, the use of practice-relevant knowledge and use-inspired research.[18]

A report titled 'Education at a Glance 2014' published by the Organisation for Economic Co-operation and Development on 9 September 2014, revealed that by 2014, 84 percent of young people were completing upper secondary education over their lifetimes, in high-income countries. Tertiary-educated individuals were earning twice as much as median workers. In contrast to historical trends in education, young women were more likely to complete upper secondary education than young men. Additionally, access to education was expanding and growth in the number of people receiving university education was rising sharply. By 2014, close to 40 percent of people aged 25–34 (and around 25 percent of those aged 55–64), were being educated at university.[19]

Universities may employ a number of people. Depending on the funding, a university typically hires one teacher per 3–25 students. According to the ideal of research-university, the university teaching staff is actively involved in the research of the institution. In addition, the university usually also has dedicated research staff and a considerable support staff. Typically to work in higher education as a member of the academic faculty, a candidate must first obtain a doctorate in an academic field, although some lower teaching positions require only a master's degree.[citation needed]

Most of the administrative staff works in different administrative sections, such as Student Affairs.[citation needed] In addition, there may be central support units, such as a university library which have a dedicated staff.[20]

The professional field involving the collection, analysis, and reporting of higher education data is called institutional research. Professionals in this field can be found at locations in addition to universities, e.g. state educational departments.[citation needed]

Post secondary institutions also employ graduate students in various assistantship roles. In the US, close to 50% of graduate students are employed as graduate assistants at some point. These apprenticeship-like positions provide opportunities for students to gain experience in, and exposure to, professional roles in exchange for funding of their academic programs.[21]

^Verger, Jacques: "Patterns", in: Ridder-Symoens, Hilde de (ed.): A History of the University in Europe. Vol. I: Universities in the Middle Ages, Cambridge University Press, 2003, ISBN 978-0-521-54113-8, pp. 35–76 (35)

^Trow, Martin (2007) [2005] Reflections on the transition from elite to mass to universal access: forms and phases of higher education in modern societies since WWII, Springer International Handbooks of Education volume 18, 2007, 243-280